5500mAh P108 18V Replacement Battery

This 18V Li‑ion replacement battery offers 5.5Ah capacity for extended runtime with compatible One+ tools, ideal when you need longer work periods and a reliable spare. It suits homeowners and tradespeople who want a straightforward swap to keep drills, saws and garden tools running without frequent recharges.

Key points

The battery delivers 5500mAh at 18V, promising longer runtime compared with lower capacity packs according to the manufacturer. It includes standard protections against overcharge, over‑discharge, overcurrent and short circuit, and claims no memory effect so occasional top‑ups are not required. The pack is supplied with a user manual and a 12 month warranty plus customer support.

Specifications

• Name: 5500mAh P108 Replacement Battery
• Type: Li-ion Battery
• Voltage: 18V
• Capacity: 5500mAh
• Compatibility: P102 P103 P104 P105 P106 P107 P108 RB18L50 RB18L40 RB18L25 RB18L15 RB18L13

Why it’s worth it

If you already own Ryobi One+ tools and need extra runtime, this replacement battery is a practical choice. It makes sense if you prefer swapping packs rather than waiting for a single battery to recharge, and it can reduce downtime on longer jobs. Bear in mind that official manufacturer support and exact performance may differ from third party packs, so check compatibility carefully.

Usage tips

Fit the battery to the tool firmly and follow the supplied manual for initial charging and safe use. You’ll like it if you keep a second pack charged for continuous work, and avoid storing the battery fully depleted to help preserve life. For storage, keep it in a cool dry place away from direct heat.